1) Why cannot CryptDB combine the Ord and Add onions in just one onion
containing the OPE, HOM and RND encryption schemes? (Ignore OPE-JOIN
here - it was actually never used.)


2) Describe the purpose of the onions in CryptDB.


3) In the applications surveyed in Fig. 9, what is the most common
level of security that fields/columns have if all queries in
the apps were to run at the server?